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"subtraction"

2, 4, 6, 8, What Does Not Associate?

Last month, I wrote about group theory via monkeys, and it got me thinking about the associative property. A mathematical group consists of a collection of stuff: integers, or rational numbers, or even something more abstract; and an operation that combines any two elements of your stuff into another element of stuff.

June 23, 2014 — Evelyn Lamb